#clojure – 2015-02-18

2015-02-18

00:55	kaplan	justin_smith, still there?
01:04	lvh	Hi! Is there a specific tool I can use to help me build fake ring request maps, for testing?
01:04	lvh	I think https://github.com/ring-clojure/ring-mock is the most suitable one, but wanted to ask.
01:08	namra	lvh: yea rink-mock works fine
01:08	namra	but depends on your demand for queries
01:08	namra	if they are pretty simple that'll do
01:11	lvh	namra: Thanks!
01:12	lvh	on my old emacs setup, whenever I created a new clj file it'd insert the ns decl automatically. If it was a test file, it'd also automatically :require clojure.core.test :refer :all, which was quite nice. My current setup doesn't do this anymore. I don't remember having anything specific for that; I thought it wasj ust clojure-mode. Any idea how to get that behavior back?
01:15	michaelr`	so anyone knows if I can use any React component from Om? are there some gotchas?
01:34	ewemoa	lvh: how does this look? https://github.com/clojure-emacs/clj-refactor.el#user-content-automatic-insertion-of-namespace-declaration
01:34	lvh	yessss
01:34	lvh	thanks!!!
01:36	ewemoa	:)
04:17	swi	Hello. I'm try to get messages from udp. I have some udp sender that send message every second. I use aleph to create udp client. But it's just wait forever and no data received, but the appropriate socket address is bind-ed in system (i see it netstat -upn output).
04:24	mindbender1	clojure.java.io/as-file is having trouble with #<URL file:/home/me/projects/clojure/%s/classes>
04:24	mindbender1	How can I work around this?
04:25	mindbender1	The exception message is : IllegalArgumentException URLDecoder: Illegal hex characters in escape (%) pattern - For input string: "s/" java.net.URLDecoder.decod
04:27	wink	mindbender1: sounds like you're missing the printf-like substitution before using it as an url. %s is not a valid hexcode indeed in url encoding
04:28	mindbender1	wink: Actually it's dynapath that returns that URL among others. I had to trace it out. don't even know how it generates that.
04:29	wink	mindbender1: yeah, no clue. just saying.if you're parsing it as an url, it needs to be an url :P
04:29	mindbender1	I have filed the issue with them on github. I think it's a problem of improper percent encoding as reported on stackoverflow.
04:31	mindbender1	wink: Sure but the context doesn't allow that granularity of control.
05:30	swi	hmm.. can't force aleph to be a good udp receiver, but java.net can...
05:37	Arie741	anybody uses heroku?
06:08	crash_ep	Are there any known problems with getting cljsjs-dependent libraries to load in a weasel/piggieback REPL?
06:08	Guest82617	crash_ep: yes
06:08	Guest82617	crash_ep: search the weasel repo for "cljsjs.react"
06:08	crash_ep	Guest82617: thanks for the pointer, I will do that now
06:08	Guest82617	crash_ep: I believe it's at least partly fixed in newer versions
06:13	crash_ep	Guest14243: thanks for that, looks like I would need to use weasel 0.6.0-SNAPSHOT to work around it.
06:13	crash_ep	whoops
06:13	crash_ep	Guest82617: thanks for that, looks like I would need to use weasel 0.6.0-SNAPSHOT to work around it.
06:13	crash_ep	whoops
06:14	crash_ep	martinklepsch: thanks for that, looks like I would need to use weasel 0.6.0-SNAPSHOT to work around it.
06:14	martinklepsch	crash_ep: yes
06:15	martinklepsch	I want something like `every?` but for multiple predicates on one value with proper short circuiting. Is there such thing?
06:16	martinklepsch	,(every? true? ((juxt even? neg?) -2))
06:16	clojurebot	true
06:16	martinklepsch	,(every? true? ((juxt even? neg?) -3))
06:16	clojurebot	false
06:17	martinklepsch	kind a like this juxt isn't lazy so it's evaluates all predicates before coming to a conclusion
06:17	martinklepsch	*but juxt isn't ...
06:37	hyPiRion	some-pred
06:37	hyPiRion	err, every-pred
06:38	hyPiRion	martinklepsch: ##((every-pred even? neg?) -3)
06:38	lazybot	⇒ false
06:39	martinklepsch	hyPiRion: duh. :D thank you :)
06:39	TEttinger	(inc hyPiRion)
06:39	lazybot	⇒ 70
07:00	adgtl	What is alternative like omniauth in Clojure
07:00	adgtl	like oauth strategies?
07:02	michaelr`	anyone who get's Om and React can tell me I could implement the render method for the component created here: https://github.com/omcljs/om/blob/b549554964fe5b53189222e97e77fc2db34aebd6/examples/mixins/src/core.cljs ?
07:03	michaelr`	how I could..
07:04	michaelr`	ah.. maybe specify!
07:05	TEttinger	adgtl: friend?
07:05	TEttinger	adgtl: https://github.com/cemerick/friend
07:05	adgtl	ah okay
07:05	adgtl	TEttinger: thanks
07:05	TEttinger	np
08:02	matthavener	are core.async timeout channels affected by leap seconds? if a leap second occured during the delay calc here [0], is it possible to get a channel that waited an extra second (or didn't wait?)
08:02	matthavener	[0] https://github.com/clojure/core.async/blob/master/src/main/clojure/clojure/core/async/impl/timers.clj#L51
08:27	jamiei	Does anyone happen have an example of consuming from an Aleph manifold stream via core.async? I've found various mentions that it can be done, but seemingly not providing any examples.
08:30	vas	jamiei: have you seen this? http://comments.gmane.org/gmane.comp.java.clojure.aleph/717
08:31	mbac	i have to translate some matlab code into clojure. what's the closest thing to matlab's arrays? is it mikera's matrix lib?
08:31	justin_smith	jamiei: based on this source, it looks like channels are extended so that manifold can treat them as a source https://github.com/ztellman/manifold/blob/master/src/manifold/stream/async.clj
08:32	justin_smith	jamiei: which is also reflected in that mailing list post, so yeah, looks simple enough
08:34	jamiei	ooh, thanks vas and justin_smith, will take a look at those links.
08:43	jamiei	vas: justin_smith: Thanks for the pointers, all sorted.
08:48	vas	jamiei: awesome. ^_^ may the parens be with you
08:48	justin_smith	cool
08:54	jamiei	:)
09:23	julianleviston	I have many calls in to a recaching function ('recache'). This function can recache any number of a large set of data that is not known at compile time. It works off a number key. These calls come in via a core async put! message. I have a 'go while true' block that simply makes the call to the recache-worker function that actually does the recaching. My problem is that I'd like to introduce debouncing, but per
09:24	julianleviston	I have many calls in to a recaching function ('recache'). This function can recache any number of a large set of data that is not known at compile time. It works off a number key. These calls come in via a core async put! message. I have a 'go while true' block that simply makes the call to the recache-worker function that actually does the recaching. My problem is that I'd like to introduce debouncing, but per
09:24	julianleviston	I have many calls in to a recaching function ('recache'). This function can recache any number of a large set of data that is not known at compile time. It works off a number key. These calls come in via a core async put! message. I have a 'go while true' block that simply makes the call to the recache-worker function that actually does the recaching. My problem is that I'd like to introduce debouncing, but per
09:24	perplexa	¬_¬
09:24	julianleviston	I have many calls in to a recaching function ('recache'). This function can recache any number of a large set of data that is not known at compile time. It works off a number key. These calls come in via a core async put! message. I have a 'go while true' block that simply makes the call to the recache-worker function that actually does the recaching. My problem is that I'd like to introduce debouncing, but per
09:24	julianleviston	item-to-be-cached.
09:24	julianleviston	Is this reasonable? I'd actually like these chans to be garbage collected after they fall into disuse, as well, (say 10 seconds without use), so that they're not clogging memory and not being used. How would I go about programmatically allocating these channels and then keeping them around. Should I use a loop that keeps a map that has the cacheable-entities' keys as its keys? How about the expiry?
09:24	perplexa	please don't spam
09:25	julianleviston	Erm… what do you mean?
09:25	Empperi	especially since part of your text was cut off
09:25	Empperi	well you sent the exact same text 4 times
09:25	julianleviston	I did?
09:25	perplexa	i mean that you just pasted an incomplete wall of text 4 times
09:25	Empperi	but it was cut off at "debouncing, but per"
09:25	TEttinger	yeah, 2 seconds apart
09:25	julianleviston	Sorry, I didn’t realise… I didn’t see that, I just pasted into my IRC client and nothing came up in the channel, so I assumed it was disallowing my input
09:25	TEttinger	network issue?
09:25	TEttinger	ah
09:26	julianleviston	apologies.
09:26	perplexa	you might want to use a pastebin
09:26	julianleviston	fair
09:26	Empperi	refheap! It's #clojure after all :)
09:26	perplexa	hehe
09:26	TEttinger	or just send multiple messages, since there were logical sentence splits in there
09:26	julianleviston	Yeah, I tried to do that.
09:28	julianleviston	This is my question : https://www.refheap.com/97487
09:31	julianleviston	I’m wondering if there might be a simpler way to achieve what I’m going for… hmmm :)
09:33	gfredericks	amalloy_: oh hey I figured out how to rewrite the nasty macro from yesterday without using external state
09:33	gfredericks	amalloy_: the outer macro would pass information to the inner macro by throwing it on the metadata for the inner macro call, which could use &form to pull it back out
09:34	gfredericks	could also be any dummy arg that takes metadata
09:39	TimMc_	julianleviston: What IRC client are you using?
09:39	julianleviston	Colloquy
09:39	julianleviston	TimMc_: for mac.
09:39	TimMc_	Have you looked at core.cache? I don't think that will handle the debouncing, though.
09:40	julianleviston	TimMc_: I’ve got a cache already. I also have a debounce function. They’re fine.
09:40	julianleviston	TimMc_: mostly I’m just after advice about whether that’s an insane way to do it - one chan per entity...
09:41	TimMc_	Ah, I see.
09:42	julianleviston	and also maybe some hints about how to go about expiring the chans after x ms… not really sure how to do that if I’m looping with a map of chans as my pass through value on the loop… I guess I could have a timestamp on them or something?
09:42	TimMc	I'm none too familiar with core.async, unfortunately.
09:43	TimMc	Doesn't core.cache have expiration? You could have an expiring cache of channels.
09:43	julianleviston	TimMc: this is cljs
09:43	TimMc	Oh!
09:43	julianleviston	TimMc: and I don’t want the cache to expire, I want the chans to expire
09:43	julianleviston	TimMc: the debounce chans…
09:43	TimMc	Well, now this is totally out of my area.
09:44	julianleviston	TimMc: hehe :) sorry! and thanks for the helpful thoughts
10:07	michaelr`	just burned a few good hours and my brain, trying to fit a react drag and drop mixin component with Om.
10:08	michaelr`	anyone knows anything about this stuff?
10:11	julianleviston	michaelr`: I use react all the time, but I’ve never done mixins, and haven’t done a drag n drop with them yet. I have to do one in the not too distant future tho...
10:12	julianleviston	michaelr`: sorry, I mean I use Om all the time… (and obviously react too)
10:19	michaelr`	julianleviston: i'm trying something along the lines of this example of the dnd component: https://github.com/gaearon/react-dnd/blob/343541974aa7a83eb5679daea40ca9d2f10eda7a/examples/_dustbin-simple/Item.js
10:19	michaelr`	and my om mixin example reference is this one: https://github.com/omcljs/om/blob/b549554964fe5b53189222e97e77fc2db34aebd6/examples/mixins/src/core.cljs
10:20	julianleviston	michaelr`: I’m assuming you’ve compared and contrasted the drag n drop example that the om site links to?
10:21	michaelr`	this component looked more complete and mature to me..
10:22	michaelr`	it seems to me that if i'd like to use the dnd example from om's site i'd have to really dive into this dnd stuff..
10:23	michaelr`	the mixin component seems to handle all the heavy lifting.
10:23	julianleviston	Ah ok
10:23	julianleviston	what’s dnd?
10:24	julianleviston	oh god… lol drag n drop. sorry…
10:26	julianleviston	michaelr`: I assume you’ve looked at the sortable example? https://github.com/omcljs/om/blob/b549554964fe5b53189222e97e77fc2db34aebd6/examples/sortable/src/core.cljs
10:26	julianleviston	michaelr`: has a “generic draggable” in there...
10:26	julianleviston	michaelr`: might be a good start?
10:27	julianleviston	michaelr`: I don’t suppose you’re a pro at core.async by any chance, are you? :)
10:28	michaelr`	julianleviston: not a pro :)
10:29	julianleviston	michaelr`: here’s my question: https://www.refheap.com/97487
10:29	michaelr`	i guess I could use that sortable example, but since I already spent some good hours trying to figure out the mixin stuff I'd rather try and get it to work..
10:29	llasram	b
10:29	llasram	heh, wrong buffer
10:31	julianleviston	michaelr`: so what isn’t working about it?
10:32	michaelr`	regarding your question, i didn't really understand it :) can you maybe make it more simple?
10:32	michaelr`	it seems that you are asking many questions there
10:33	julianleviston	michaelr`: yeah… I kind of am.
10:34	julianleviston	michaelr`: I want to introduce per-item debouncing and I was wondering if a chan-per-item is a bit of an insane way to do it?
10:34	michaelr`	what isn't working is that the component with the mixin becomes the parent component of the one which does the rendering, and I can't call a function which comes with the mixin from my (render) handler - it seems that it is on the parent component or something..
10:35	julianleviston	michaelr`: and if I do implement it with one chan per item (in a map), then I wonder how I’d go about “retiring” the go chans (& their go blocks) to be garbage collected when they had expired.
10:36	julianleviston	michaelr`: man that sounds complex
10:36	michaelr`	what do you mean by debouncing?
10:36	sveri	How do I call a function x times and put the functions result into a vec?
10:37	michaelr`	,(doc repeat)
10:37	clojurebot	"([x] [n x]); Returns a lazy (infinite!, or length n if supplied) sequence of xs."
10:37	michaelr`	no
10:37	justin_smith	michaelr`: to call a function n times you want repeatedly
10:37	julianleviston	sveri: the pass that into “into []”
10:37	michaelr`	,(doc times)
10:37	clojurebot	Cool story bro.
10:37	justin_smith	and into to put it in a vec
10:37	justin_smith	michaelr`: repeatedly
10:37	michaelr`	sveri: what justin_smith
10:37	michaelr`	said
10:38	justin_smith	,(into [] (repeatedly 10 rand))
10:38	clojurebot	[0.1591637445756442 0.7522457558793089 0.4153232341251093 0.1170311821530805 0.4616383407167318 ...]
10:38	sveri	thank you all :-)
10:38	justin_smith	sveri: why a vec?
10:38	julianleviston	michaelr`: the debouncing means that the cache requests get called multiple times, and I want a timeout of no requests to ensue before the actual work is done… so i’m not doubling up.
10:40	sveri	justin_smith: well, a list would be ok too
10:40	clojurebot	Pardon?
10:40	justin_smith	sveri: that's why I asked, in that case you don't need the into part
10:40	michaelr`	julianleviston: like a buffer which items you make distinct and flush once in a while?
10:41	sveri	just a seq of a functions results
10:41	justin_smith	julianleviston: what about something from core.cached? I think they have a mechanism where a calculation currently in the works is not restarted
10:41	AeroNotix	julianleviston: simplest way is to use a RWLock
10:41	AeroNotix	a map of {:key {:value Var :lock Lock}}
10:42	justin_smith	julianleviston: core.cached also has mechanisms for dropping old contents
10:42	AeroNotix	http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/locks/ReadWriteLock.html
10:42	julianleviston	michaelr`: um…. no… like… if you were debouncing inputs from me, every time I gave you something, you’d reset your clock… and throw away any you had… until a the clock alarm rang… and then you’d use that one.
10:42	julianleviston	I’m on cljs guys...
10:42	AeroNotix	dang
10:42	julianleviston	justin_smith: so no core.cached
10:42	julianleviston	AeroNotix: and no java
10:42	AeroNotix	Sheeeit
10:43	Jaood	;)
10:43	julianleviston	but the debouncing isn’t a problem. i’ve already got that.
10:43	AeroNotix	What are you referring to as "debouncing"?
10:43	tbaldridge	should be pretty easy to port the needed bits from core.cached
10:43	julianleviston	AeroNotix: this: https://gist.github.com/scttnlsn/9744501
10:44	julianleviston	tbaldridge: but I don’t need it. I just want to know if one chan per entity is a sane way of doing this… I don’t need a cache…I’ve already built myself a cache, and I have the debouncing code…
10:45	tbaldridge	julianleviston: how many entities will you have?
10:46	julianleviston	tbaldridge: it’s not known.
10:46	tbaldridge	and how much churn will there be
10:46	julianleviston	tbaldridge: anywhere from 10 to 400
10:46	tbaldridge	And the churn? Will they last 1 sec, 1ms?
10:47	AeroNotix	this debounce seems to put some value on the channel when there hasn't been any activity for the timeout, right?
10:47	julianleviston	tbaldridge: do you mean how many times will they be debounced per time? or how long before I want the chans to expire?
10:47	tbaldridge	how long before the chans expire
10:47	julianleviston	AeroNotix: yup!
10:47	AeroNotix	how will you be using that?
10:47	julianleviston	tbaldridge: oh… um… 5 secs, I guess?
10:47	tbaldridge	yeah, that should work then
10:47	julianleviston	tbaldridge: what should work?
10:47	tbaldridge	one chan per entity.
10:48	AeroNotix	Don't guess. Measure.
10:48	julianleviston	tbaldridge: ohhhhhh awesome… thanks
10:48	julianleviston	AeroNotix: didn’t tbaldridge write the core.async go block code?
10:48	tbaldridge	Think of channels as about the size of an object + 5 arrays (or so). So they aren't super expensive, but they aren't as small as a cons cell either
10:48	julianleviston	tbaldridge: you did, right?
10:48	AeroNotix	I don't care, and I know tbaldridge wrote the code
10:49	AeroNotix	but just saying "that should be fine" is a guess. Implement. Measure. Iterate.
10:49	tbaldridge	yes, always measure, that too ;-)
10:50	julianleviston	AeroNotix: Well I was after advice about whether it was a good way to do it…
10:50	tbaldridge	I mean questions like "is this sane" is a very open-ended question, AeroNotix, how to you measure sanity of code
10:50	AeroNotix	tbaldridge: there's a lot of needed context before you answer a question like that, though.
10:50	julianleviston	AeroNotix: because quite often, someone says “oh, just do this”…. (inrest some very elegant way)
10:51	julianleviston	insert*
10:52	julianleviston	Now I have to think of a way to “expire” then chans...
10:53	julianleviston	tbaldridge: in that debounce code, will the chan stay around as long as there is a ref to the out chan? or will I have to somehow signal it to die? https://gist.github.com/scttnlsn/9744501
10:55	julianleviston	tbaldridge: coz there’s like an infinite go block in there, right? if I just used that debounce code as is, wouldn’t the number of go blocks slowly accumulate over time?
10:55	tbaldridge	gos turn themselves into callbacks that are attached to channels. So channels reference go blocks, once the channel is GC'd so is the go block
10:55	tbaldridge	(assuming the go block is waiting on that channel)
10:55	julianleviston	tbaldridge: oh man… THAT would have been excellent to know a while ago…
10:56	julianleviston	tbaldridge: yeah it’ll be waiting on the in chan… so if I garbage collect that, all should be good…
10:57	julianleviston	tbaldridge: thanks for that bit of knowledge!
10:57	julianleviston	wiring all this up is going to take some thought ;-)
11:07	TimMc	,#.{}
11:07	clojurebot	#<RuntimeException java.lang.RuntimeException: Record construction syntax can only be used when read-eval == true>
11:08	llasram	nice
11:08	TimMc	locally I get: ClassNotFoundException / java.lang.Class.forName0 (Class.java:-2)
11:11	Bronsa	,#.
11:12	clojurebot	#<RuntimeException java.lang.RuntimeException: Record construction syntax can only be used when read-eval == true>
11:12	hyPiRion	&#.foo{}
11:12	lazybot	java.lang.RuntimeException: Record construction syntax can only be used when read-eval == true
11:13	Bronsa	looks like it's not even reading the ctor args
11:13	Bronsa	that's somewhat surprising
11:14	julianleviston	I don’t follow why this is weird
11:15	justin_smith	julianleviston: #. is a weird ass invalid record constructor
11:15	julianleviston	justin_smith: I still don’t get it, but ok. :S
11:16	justin_smith	julianleviston: if you saw #. in code, what would you expect it to be?
11:16	justin_smith	a blatant error?
11:16	julianleviston	justin_smith: an error
11:16	Bronsa	justin_smith: what surprises me is that #foo.bar [1] errors out on foo.bar but after that it evaluates [1]
11:16	justin_smith	exactly
11:16	Bronsa	justin_smith: as opposed to what happens for #foo [1]
11:16	justin_smith	Bronsa: oh, that's a separate thing, OK
11:16	julianleviston	but it’s not an error like that… it’s a blank record constructor
11:17	julianleviston	with no namespace… right?
11:17	Bronsa	yeah, ctor syntax doesn't consume the argvec in case of error
11:20	julianleviston	I still don’t get why you think it’s weird. This is the output from my REPL: ClassNotFoundException / java.lang.Class.forName0 (Class.java:-2)
11:20	julianleviston	I must be missing something.
11:21	justin_smith	julianleviston: if you have an arg, it will return the arg
11:21	justin_smith	as if it weren't an arg, but just supplied on its own
11:22	julianleviston	justin_smith: it seems to spit out a map
11:23	julianleviston	but I don’t think that’s what it’s doing… (type #.{}) ; -> RuntimeException Unmatched delimiter: ) clojure.lang.Util.runtimeException (Util.java:221)
11:23	julianleviston	Ok I get you. It’s all borked up.
11:23	julianleviston	sorry for being so dense!
11:26	ajmagnifico	anyone: I have a namespace A, into which I am using (ns :use) to bring in functions from namespace X and namespace Y.
11:26	ajmagnifico	Namespace X belongs to a 3rd party library.
11:26	ajmagnifico	I wrote Namespace Y.
11:26	ajmagnifico	Namespace Y has a function that I deliberately named in order to cover up a function with the same name in Namespace X.
11:27	ajmagnifico	Clojure gives me this exception:
11:27	Bronsa	ajmagnifico: don't use :use, use :require with :refer or :as
11:27	ajmagnifico	$join already refers to: #'incanter.core/$join in namespace:
11:27	lazybot	ajmagnifico: It is not the case that you don't not unhave insufficient privileges to do this.
11:28	justin_smith	ajmagnifico: as Bronsa says, :use is considered poor style
11:29	TimMc	hyPiRion: Ugh, so close to being valid syntax: (. #"" '"=")
11:29	ajmagnifico	Just specify only those things that I actually need, right?
11:29	TimMc	,(. #"" '"=")
11:29	clojurebot	#<IllegalArgumentException java.lang.IllegalArgumentException: No matching method found: quote for class java.util.regex.Pattern>
11:29	ajmagnifico	Fair enough.
11:29	ajmagnifico	thanks justin_smith and bronsa
11:29	justin_smith	ajmagnifico: if you ever refactor your namespaces you'll be glad you did it that way
11:33	hyPiRion	TimMc: ooh
11:33	Bronsa	TimMc: that technically is valid syntax
11:34	julianleviston	ajmagnifico: or even if you just go back and want to understand your code later!
11:34	ajmagnifico	I'm using incanter,
11:34	ajmagnifico	for statistical analysis
11:34	ajmagnifico	so there are many functions in incanter.core
11:34	TimMc	hyPiRion: (meta ^#=(keyword "test") []) ;;= {:test true}
11:34	ajmagnifico	And the lazy side of me was just tempted to use (:use incanter.core)
11:35	ajmagnifico	Discipline!
11:35	hyPiRion	TimMc: what about it?
11:35	hyPiRion	that one I know
11:35	TimMc	Nothing, really. I don't think I'd seen that abuse before.
11:35	hyPiRion	oh
11:39	julianleviston	At what point does a record start to have perf benefits over a map? in the hundreds, or thousands of items?
11:40	julianleviston	actually it’s probably more like space benefits isn’t it? I can’t remember.
11:40	TimMc	I think it's access perf.
11:40	kaplan	justin_smith, thank for being so helpful
11:41	kaplan	(inc justin_smith )
11:41	lazybot	⇒ 5
11:42	julianleviston	(inc tbaldridge)
11:42	lazybot	⇒ 18
11:44	julianleviston	TimMc: Cool, thanks: http://stackoverflow.com/questions/4575170/where-should-i-use-defrecord-in-clojure
11:44	julianleviston	(inc TimMc)
11:44	lazybot	⇒ 93
11:51	Eremox	Anyone has any experience with quil?
11:53	Eremox	hello?
11:56	dweave	anyone read this? http://www.vpri.org/pdf/tr2011001_final_worlds.pdf . is there anything in clojure that reifies this
11:57	dweave	are cursors / lens similar?
11:58	SegFaultAX	dweave: There are a few different notions of cursors, so I'm not sure which you're specifically referring to.
11:58	dweave	i guess Om’s
11:58	SegFaultAX	But I will say that lenses are extremely generic.
11:59	SegFaultAX	Oh, then no. Those cursors represent a tiny fraction of what lenses can do.
12:00	dweave	so what are these “worlds” then really?
12:00	dweave	is clojures stm like this?
12:02	dweave	ah section 8 is a pretty good description.. I’m just rereading a second time
12:05	gfredericks	has anybody started/finished working on integrating cljfmt with emacs?
12:12	anildigital	Has anyone worked with friend-oauth2?
12:13	anildigital	I am trying to do foursquare oauth with it
12:13	anildigital	but getting redirected to http://localhost:3000/auth/callback .. instead of it doing flow of fetching access_token
12:13	adgtl	Here is code example https://github.com/anildigital/foursquare-1self/blob/master/src/foursquare_1self/handler.clj
12:19	TimMc	hyPiRion: Do you have thoughts on whether -> and ->> can achieve any final arrangement of non-macro expressions?
12:21	hyPiRion	TimMc: I've tried to take the form (foo b c) and convert it to (foo (b c)) without luck. So I presume it's not possible in general
12:22	hyPiRion	But I'm pretty sure you can reorder atoms in whatever way you want
12:22	hyPiRion	(i.e. non-collections)
12:24	gfredericks	the cljfmt readme says that cider 0.9+ supports cljfmt but the cider repo shows no signs of 0.9 being a thing
12:24	Bronsa	,(macroexpand-1 '(-> 1 2 3 4))
12:24	clojurebot	(4 (3 (2 1)))
12:24	Bronsa	,(-> 1 2 3 4 quote)
12:24	clojurebot	(4 (3 (2 1)))
12:24	Bronsa	my mind is blown right now
12:25	hyPiRion	Bronsa: oh, you've seen nothing
12:25	schmir	gfredericks: I'm using cider 0.9.0snapshot
12:26	hyPiRion	,((-> [n] #(if (zero? n) 1 (* n (fact (- n 1)))) (->> (-> fact))) 10)
12:26	clojurebot	3628800
12:26	Bronsa	hyPiRion: I'm not even going to try and parse that
12:27	hyPiRion	,(require '[clojure.walk :refer [macroexpand-all]])
12:27	clojurebot	nil
12:27	hyPiRion	,(macroexpand-all '(-> [n] #(if (zero? n) 1 (* n (fact (- n 1)))) (->> (-> fact))))
12:27	clojurebot	(fn* fact [n] [] (if (zero? n) 1 (* n (fact (- n 1)))))
12:27	Bronsa	that's fun
12:27	kaplan	Wait
12:27	kaplan	Unquote is the opposite of quote
12:27	kaplan	My mind is blown
12:28	kaplan	poof
12:30	vas	O_O
12:30	vas	CODE IS DATA
12:32	gfredericks	schmir: okay cool thanks
12:32	schmir	gfredericks: I'm installing from melpa
12:36	gfredericks	I mostly got confused expecting the cider repo to mention cljfmt somehow or another but it's actually the cider-nrepl repo that does
13:07	kras	,(let [[n l r & st] '(:a :b nil)] st)
13:08	clojurebot	nil
13:09	kras	why does the above code give the below error on tryclj.com
13:09	kras	java.lang.IllegalArgumentException: let requires an even number of forms in binding vector in clojure.core:
13:10	socksy	kras: works for me
13:10	socksy	typo?
13:12	kras	socksy: you tried on tryclj.com?
13:12	TimMc	Works for me too.
13:12	TimMc	Annoying that I can't paste into that page.
13:12	TEttinger	you can totally make it send that error
13:12	TEttinger	,(let [[n l r & st] '(:a :b nil)] st)
13:12	clojurebot	#<CompilerException java.lang.IllegalArgumentException: let requires an even number of forms in binding vector in sandbox:, compiling:(NO_SOURCE_FILE:0:0)>
13:13	TEttinger	I stuck a unicode invisible char in there
13:13	TimMc	:-)
13:14	TEttinger	it could be that your input is switching between RTL and LTR modes, which causes that same invisible char
13:15	socksy	kras, yes, did
13:17	TEttinger	,(count "(let [[n l r & st] '(:a :b nil)] st)")
13:17	clojurebot	36
13:17	TEttinger	can you verify that that form (without the opening comma) is also 36 chars?
13:18	lxsameer	hey folks, I'm looking for an IMAP or pop3 library to create a proxy mail server, do you know any?
13:19	TEttinger	lxsameer: most home-run mail servers get flagged as spam
13:20	lxsameer	TEttinger: I see, I want to create a proxy mail server to serve mailgun api via IMAP
13:21	kras	I typed the expression again and it works fine now
13:21	kras	it is 36 chars
13:21	TEttinger	weird stuff, kras.
13:21	TEttinger	maybe their server had a hiccup and only received some of your chars
13:22	TEttinger	(the first time i mean)
13:22	TEttinger	missing a ] would do that I think
13:22	TEttinger	,(let [[n l r & st '(:a :b nil)] st)
13:22	clojurebot	#<RuntimeException java.lang.RuntimeException: Unmatched delimiter: )>
13:22	TEttinger	hm nope
13:24	kras	Give me some Clojure:
13:24	kras	> > (let [[n l r & st] '(:a :b nil)] st)
13:24	kras	java.lang.IllegalArgumentException: let requires an even number of forms in binding vector in clojure.core:
13:24	kras	#<core$_GT_ clojure.core$_GT_@67a3677b>
13:24	kras	> (count "> (let [[n l r & st] '(:a :b nil)] st)
13:24	kras	java.lang.IllegalArgumentException: let requires an even number of forms
13:24	kras	java.lang.RuntimeException: EOF while reading string
13:24	kras	> (count "(let [[n l r & st] '(:a :b nil)] st)")
13:24	kras	36
13:24	kras	> (let [[n l r & st] '(:a :b nil)] st)
13:24	kras	nil
13:25	kras	Here is the sequence pasted from tryclj.com
13:26	kras	might be a glitch or something, very confusing for a beginner
13:26	kras	nevermind I have CIDER plugin for my emacs now, so trying out at the local REPL
13:27	TEttinger	ah!
13:27	TEttinger	the first one had two >
13:28	TEttinger	,(let [[n l r & st] '(:a :b nil)] st)
13:28	clojurebot	nil
13:28	TEttinger	,> (let [[n l r & st] '(:a :b nil)] st)
13:28	clojurebot	#<core$_GT_ clojure.core$_GT_@6fdf5e5>
13:33	Raynes	I think people don't often understand how much crazy shit tryclj/clojail does in order to allow safe execution of code in a shared environment.
13:33	Raynes	If they knew what went on in there, they'd not be surprised at glitches. :p
13:33	TEttinger	hehe
13:42	kras	:-)
13:52	TimMc	,(:special-form (meta #'fn))
13:52	clojurebot	true
13:55	justin_smith	LIES
13:57	TimMc	Interesting.
13:57	TimMc	,(macroexpand-1 '(fn [aaa [bbb]] 5))
13:57	clojurebot	(fn* ([aaa p__51] (clojure.core/let [[bbb] p__51] 5)))
13:58	TimMc	That's a reasonable way of doing it, of course.
13:58	AeroNotix	TimMc: how else would you do it?
13:58	TimMc	I'd never considered it before.
13:59	AeroNotix	I'm wanting to ship an (internal) clojure library for consumption for Java developers. What can I do to make this really nice for them? I.e. I want to make it totally incidental that it's implemented in Clojure and not Java.
14:00	gtrav	trying to load all the function definitions within an external .clj file from within java code. using jdk 1.7 and clojure 1.6 jar. Clojure.read(/path/to/file) doesn't work, how do I do the equivalent of (load-file /path/to.file) within java code?
14:02	justin_smith	gtrav: read just parses
14:02	justin_smith	gtrav: read does not eval (usually)
14:02	justin_smith	you want load, or require
14:02	gtrav	require since the functions will later be run
14:04	hiredman	if the clojure code is in a namespace, and that file is situated on the on the classpath properly, you should just require it from the java code
14:04	hiredman	RT.var("require").invoke(RT.var("clojure.core", "symbol").invoke("some.ns")) modula some casts maybe
14:05	AeroNotix	so what's the best way to write a clojure library that looks "normal" from Java. Because that interop is gross^
14:05	AeroNotix	(:gen-class) with all the bells and whistles?
14:06	justin_smith	AeroNotix: well, you still need to make sure that gets loaded somewhere - or do you mean gen-class with AOT on the clojure side when packaging?
14:06	gtrav	thanks hiredman, will try it, but as of clojure 1.6 the RT is not part of the public IF. from the clojure javadoc only IFn and Clojure are supposed to be used, or am I reading that wrong?
14:06	AeroNotix	justin_smith: I just want to write a clojure library that some java colleagues can use seamlessly.
14:06	AeroNotix	and I want them to not have to deal with any cognitive overhead
14:07	amalloy	AeroNotix: i have a perfect example for you, if i do say so myself
14:07	AeroNotix	amalloy: shoot it my way!
14:07	amalloy	https://github.com/amalloy/thrift-gen
14:08	amalloy	it's a clojure library with a java front-end adapter included
14:08	AeroNotix	so I'll need to write java?
14:09	amalloy	it's one class, one interface, a few methods. not a huge deal. you can generate equivalent bytecode from clojure, but (a) it's harder, and (b) it will give your colleagues cognitive overhead
14:10	AeroNotix	amalloy: thanks for the example. This java file looks like I could deal with that fine. Thanks!
14:10	hiredman	gtrav: shrug use whatever you want
14:11	amalloy	AeroNotix: it used to be just the first 32 lines; really if you just want to expose clojure functions, you need ilke 5 lines of java per function. i went the extra mile on this one and presented a class-based wrapper, rather than just a bunch of static methods, which would probably be fine for most cases
14:12	AeroNotix	amalloy: indeed, sounds good to me.
14:14	lxsameer	guys, is there any networking library for clojure ? something like twisted for python or event machine for ruby ?
14:15	AeroNotix	lxsameer: what are you trying to solve?
14:15	justin_smith	lxsameer: we have SO MANY NETWORKING LIBRARIES
14:15	lxsameer	I want to create a dummy Imap server to act as proxy for mailgun
14:16	lxsameer	justin_smith: which one supports IMAP and is suitable for a clojure newbie ?
14:16	justin_smith	lxsameer: I don't know about imap specifically, but aleph can do general tcp very nicely
14:17	lxsameer	justin_smith: cool
14:17	justin_smith	lxsameer: though if there is an imap lib, even better of course (never had to do that myself)
14:17	lxsameer	justin_smith: thanks buddy
14:18	justin_smith	so far it looks like nobody has a premade clojure imap lib - I wonder how hard the protocol would be to implement with aleph
14:20	hiredman	my understanding is twisted and event machine are largely working around python and ruby's lack of concurrency, the jvm has real threads so why bother?
14:20	justin_smith	lxsameer: you could use Hedwig via interop maybe (it is a java imap implementation)
14:21	lxsameer	justin_smith: nice, let me check it out
14:23	kungi	I am implemented my own "multiple context path" handling middleware in my webapp. This sadly broke friend such that only every second "login" gets redirected to the proper location. The problem seems to reside in the "retry-request" function in friend. My context path handling is here: https://gist.github.com/Kungi/9bb1cdb88df9ea889300. Can someone help me debug this?
14:23	kungi	s/am/have/
14:23	lxsameer	justin_smith: Hedwig is a server application, not a library am i right ?
14:24	hiredman	I wrote a dummy imap server for some tests, it is a really gross 137 line function spinning up threads for each request
14:24	justin_smith	lxsameer: it's java, so it will have a jar, containing classes you can use. Or maybe in the rare case it's only usable as an app, but that isn't my experience typically.
14:25	hiredman	129 lines (not counting the ns form)
14:25	lxsameer	justin_smith: thanks for your guidance man
15:26	devll	(use 'clojure.java.io)
15:26	devll	(-> "/tmp" file .listFiles)
15:26	devll	Hi
15:26	devll	I cant list files.
15:27	devll	/tmp> ls \| wc -l
15:27	devll	195
15:27	devll	actually there are 195 files.
15:28	gfredericks	devll: and what do you get when you call .listFiles?
15:28	devll	I am running "lein repl" and "ls" with the same user.
15:29	TEttinger	I'm on windows, but (-> "C:/" file .listFiles vec count) gives me the number
15:29	TEttinger	err, (-> "C:/" file .listFiles count) should work
15:30	justin_smith	devll: what does that actually return?
15:30	devll	my bad.
15:31	devll	#<File[] [Ljava.io.File;@62eeee05>
15:31	devll	file array
15:31	justin_smith	that's exactly what it should return, yeah
15:31	justin_smith	you can use seq or into or map to get what you want from that
15:31	devll	PL-y 0.3.2, nREPL 0.2.0-beta5NoSuchMethodError clojure.tools.nrepl.StdOutBuffer.length()I
15:31	TEttinger	do you want the same effect as ls?
15:32	AeroNotix	file-seq on a directory is interesting too
15:32	devll	OK.
15:32	AeroNotix	(-> "/" clojure.java.io/file file-seq)
15:32	AeroNotix	,(-> "/" clojure.java.io/file file-seq)
15:32	clojurebot	#<SecurityException java.lang.SecurityException: denied>
15:32	AeroNotix	yay
15:32	justin_smith	ls
15:32	lazybot	etc home lib64 mnt run
15:33	justin_smith	(it's a shortcut)
15:33	hadronzoo	Can anyone recommend a database migration library?
15:34	zeeshanlakhani	hadronzoo: there's ragtime -> https://github.com/weavejester/ragtime
15:34	devll	thanks all. I got things messed up.I guess I have to sleep.
15:35	devll	(inc AeroNotix )
15:35	lazybot	⇒ 1
15:35	devll	(inc AeroNotix)
15:35	lazybot	⇒ 6
15:35	AeroNotix	yay
15:35	AeroNotix	a whole 6
15:36	devll	:D
15:36	hadronzoo	zeeshanlakhani: I see several. I was wondering if anyone had any recommendations.
15:36	TEttinger	(inc AeroNotix)
15:36	lazybot	⇒ 7
15:36	zeeshanlakhani	ragtime is the one we used on a project awhile back and it worked well and was easy to adapt plugins for (e.g. https://github.com/sfx/ragtime.elasticsearch)
15:36	TEttinger	lucky number slevin
15:39	hadronzoo	zeeshanlakhani: Can migrations with ragtime be clojure functions?
15:42	zeeshanlakhani	hadronzoo: we used it for posgres... w/ the sql plugin, which was all up/down sql files. However, for our ES plugin, we defined migrations w/ funs -> https://github.com/sfx/ragtime.elasticsearch#defining-a-migration
15:45	hadronzoo	zeeshanlakhani: OK, I'll take a look. Thanks.
15:45	zeeshanlakhani	np
16:02	hadronzoo	zeeshanlakhani: When attempting to run "lein ragtime -m", I get a "no matching clause" exception. Is there additional config other than adding the directory and the dependency to the project.clj?
16:02	hadronzoo	zeeshanlakhani: I also added a :ragtime key in project.clj with the database connect string
16:03	zeeshanlakhani	hadronzoo: did you see this: https://github.com/weavejester/ragtime/wiki/Getting-Started? it's good to be specific abt the key names
16:03	hadronzoo	yes, but it doesn't have anything about the lein command usage
16:05	zeeshanlakhani	hadronzoo: we used a ragtime profile and called out ragtime like `lein with-profile ragtime ragtime migrate -d "jdbc:postgresql:beatport_api"`
16:06	zeeshanlakhani	:ragtime
16:06	zeeshanlakhani	{:dependencies [[ragtime/ragtime.sql.files "0.3.6"]]
16:06	zeeshanlakhani	:plugins [[ragtime/ragtime.lein "0.3.6"]]
16:06	zeeshanlakhani	:ragtime {:migrations ragtime.sql.files/migrations}}
16:06	zeeshanlakhani	as an example
16:08	hadronzoo	zeeshanlakhani: thanks. Is there a way to list migrations?
16:08	zeeshanlakhani	https://github.com/weavejester/ragtime/blob/8e782834881164eb530ddd00bb52c01b56fb0026/ragtime.core/src/ragtime/main.clj#L57
16:10	hadronzoo	zeeshanlakhani: `thub.com/weavejester/ragtime/blob/8e782834881164eb530ddd00bb52c01b56fb0026/ragtime.core/src/ragtime/main.clj#L57
16:10	hadronzoo	*** tbaldridge (~tim@216.207.42.140) has quit: Ping timeout: 265 seconds
16:10	hadronzoo	*** yogthos\|away (~yogthos@li231-96.members.linode.com) is now known as
16:10	hadronzoo	yogthos
16:10	hadronzoo	*** SirRobin (~wjc@2a01:e35:2e74:a2c0:6267:20ff:fef0:4a0) has quit: Quit:
16:10	hadronzoo	Konversation terminated!
16:10	hadronzoo	*** dmi3y (~dmi3y@193.110.76.165) has joined channel #clojure [15:09]
16:10	hadronzoo	ERC> zeeshanlakhani: `lein ragtime migrate -m`? It throws a NullPointerException.
16:10	hadronzoo	sorry about that
16:13	zeeshanlakhani	hadronzoo: ah, was confused by what you wanted... -m relates to a function you want to return the migrations to run. don't think there's a list out of the box
16:13	hadronzoo	ah, that makes sense. thanks
16:25	TEttinger	here's a teaser for you, justin_smith
16:26	TEttinger	give an example piece of code that returns different values based on whether or not you bound something with X or (identity X), for some value of X
16:29	TEttinger	gfredericks, you might also enjoy this
16:31	annapawlicka	Hello world! Where does one put a docstring in defmethod? Or is adding it to defmulti the only option?
16:32	justin_smith	annapawlicka: may or may not be relevant, defmethod has an optional name argument
16:32	arrdem	annapawlicka: defmulti is the only option. extending docstrings from implementations doesn't make a whole bunch of sense.
16:33	justin_smith	annapawlicka: specifically putting a name on a specific defmethod is useful for stack trace readability
16:33	annapawlicka	justin_smith: yup, useful in stack traces
16:34	annapawlicka	justin_smith: :) i just wanted to document behaviour but i guess i’ll do that in defmulti
16:34	TEttinger	,(let [agh (identity Double/NaN) hm Double/NaN] [(= agh agh) (= hm hm)])
16:34	clojurebot	[true false]
16:34	gtrav	trying to load clojure code at runtime from within java code. got it working just by calling: "RT.loadResourceScript("clojure-file-name.clj");" is there a better alternative or is this ok?
16:34	annapawlicka	arrdem: thanks. that’s what i thought
16:38	gfredericks	TEttinger: so a macro that can look at the binding form is not the sort of thing you're asking about?
16:39	TEttinger	hm, probably that would count
16:39	TEttinger	I just discovered...
16:39	TEttinger	,(let [agh (identity Double/NaN) hm Double/NaN] [(= agh agh) (= hm hm)])
16:39	clojurebot	[true false]
16:39	amalloy	TEttinger: i don't think you need the identity call at all
16:39	amalloy	,(= Double/NaN Double/NaN)
16:39	clojurebot	false
16:40	TEttinger	the identity makes it true
16:40	amalloy	mmmmm. well, i can see why
16:40	tbaldrid_	"the identity makes it true" that needs to be a clojurebot quote
16:40	amalloy	but i admit it surprised me a little
16:40	arrdem	wait what how
16:41	amalloy	when you call identity, you box up the primitive double into a Double, and = checks for object identity, so comparing an object to itself is equal
16:41	arrdem	(inc amalloy)
16:41	lazybot	⇒ 229
16:41	amalloy	but when you use Double/NaN directly, the compiler can leave it unboxed
16:41	arrdem	and you get the "real" not = result. gotcha.
16:43	amalloy	for anyone who is curious, the disassembly confirms my explanation: https://www.refheap.com/e1977e9796169076c58fb7295
16:44	gfredericks	really? a boxed NaN can be equal to itself?
16:44	arrdem	object equality.
16:45	gfredericks	seems like a borderline correctness problem
16:47	amalloy	gfredericks: agreed, but are you really going to add that overhead to RT/equiv for all objects?
16:48	arrdem	yes because correctness, no because if you're working with NaNs you've earned it.
16:49	gfredericks	what does java do here? boolean amalloy(Double x, Double y){return x.equals(y)}?
16:49	amalloy	gfredericks: it doesn't use a static equiv method
16:49	gfredericks	or um
16:49	gfredericks	what does java do for x == y?
16:50	amalloy	object identity
16:50	amalloy	for x.equals(y) it does a dynamic dispatch on x's class, of course
16:50	amalloy	and then you can pay the price for correctness only in Double/equals
16:50	gfredericks	so x == x is true for boxed doubles in java?
16:50	amalloy	sure
16:50	gfredericks	okay then it's fine
16:50	gfredericks	everything's crazy, not just clojure
16:51	arrdem	"If Java jumped off a bridge what would you do?" ~ Paul Phillips, PacNW 2013
16:51	amalloy	well, == in java is identical? in clojure, and everyone knows that, so they dont' expect it to act like =
16:51	amalloy	it's a lot crazier for clojure's = to do this than for java's ==
16:51	gfredericks	I'm saying in both cases equality on NaN's is inconsistent
16:52	xPhilo	where does disassemble-str come from?
16:52	amalloy	xPhilo: no.disassemble
16:52	xPhilo	ah, thank you.
16:52	amalloy	i have it in my .lein/profiles.clj to include no.disassemble in my local repls at the time
16:52	amalloy	cause you never know when i'll want to disassemble something
16:52	hiredman	,(identical? (Double. 10.0) (Double. 10.0))
16:52	clojurebot	false
16:56	xPhilo	I'm sure it will prove fantastically useful! Certainly much easier than how I was doing it. I'm sorry I hadn't seen that library sooner!
16:56	amalloy	xPhilo: yeah i did it by hand with javap and aot compilation for a long time. what a drag
16:57	amalloy	now instead of setting aside 20 minutes to disassemble something i can do it in 20 seconds
16:57	xPhilo	Then you understand my excitement right now.
16:58	amalloy	xPhilo: the other thing i have in my .lein/profiles is criterium
16:58	xPhilo	I have that one already. Thanks for the pointer though!
16:59	amalloy	see https://www.refheap.com/f4ca2b6cd16e10d3ae80b90cc for how to include no.disassemble. you want the lein plugin, not just the dependency
16:59	xPhilo	Thank you.
16:59	amalloy	and use whatever profile you want, not :swank which is for grumpy old men like me
17:06	xPhilo	Don't be apologetic for your operating system ;) It does have a pretty decent text editor after all.
17:07	justin_smith	xPhilo: :swank is the antique clojure integration for emacs
17:08	amalloy	right, for years the cool emacs kids have been using nrepl, not swank
17:08	justin_smith	amalloy: *cider
17:08	amalloy	mehhh
17:08	justin_smith	ok, "cool" leaves some room for definitions, sure
17:11	xPhilo	justin_smith: I know. Of course, I only know becuase I had just looked it up. Still, no reason to dodge a jab at emacs since I am currently in the hate part of our love/hate relationship.
17:21	matthavener	why doesn't (>! c :foo) unpark when c is (closed! c)
17:21	matthavener	?
17:22	xPhilo	Would someone here be able to tell me why in destructuring the :as key causes its symbol to be bound to the init-expr? I was surprised to find that it wasn't updated to reflect the :or when there is one.
17:22	justin_smith	matthavener: when would parking on a closed channel that can't be re-opened be useful?
17:22	amalloy	xPhilo: because that's what :as does. it gives a name for the original object
17:23	xPhilo	I read through (destructure) and read on the what, I was wondering if there was a why.
17:23	matthavener	justin_smith: my use case is some go-block producer that i want to 'tear down', and its current blocked on writing a result to 'c'
17:23	matthavener	guess just need alts! with a 'tear down' channel?
17:23	xPhilo	It seems it'd be just as easy to merge.
17:25	tvanhens	are there any ring middlewares for pulling the query-params from the uri? It seems like wrap-params only pulls from the query-string so do you have to manually parse the uri in order to use wrap-params?
17:26	bloop_	I'm looking to make a Clojure server backed by a DB. I want to keep it all open source so no Datomic. What are the best options?
17:27	bloop_	I'm already aware of Compojure, more interested in the DB side of things
17:28	bja	do you want to use a sql db?
17:28	bja	and how dynamic do you need the queries to be?
17:29	bloop_	no preference for SQL but Korma looks nice
17:29	bja	i.e. if you want to build django admin, you probably can't use what I would recommend first for sql, which is yesql. If your queries are too dynamic for yesql, I'd personally recommend HoneySQL
17:30	bja	if you don't want to use a SQL database, then you have a bunch of options, but most databases seem to have a honeysql-like library for clojure which lets you compose queries using data structures
17:31	bloop_	bja: I'll check out honeysql! sounds cool.
17:31	bja	I use honeysql and yesql for postgres, carmine for redis, and elastisch for elastic search quite a bit
17:32	bloop_	redis has always intrigued me. I'll look at carmine too.
17:33	bja	(I also fantasize daily about convincing management to let me use datomic so I don't have to continue implementing my own history system in postgres)
17:33	dah	honeysql++
17:34	justin_smith	dah: around here we use inc
17:34	bloop_	ha! datomic seems like really excellent technology. I so wish it was open source though.
17:34	justin_smith	(inc yesql)
17:34	lazybot	⇒ 1
17:35	bloop_	lol
17:35	bja	,(do (defalias +1 inc) (+1 yesql))
17:35	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: defalias in this context, compiling:(NO_SOURCE_PATH:0:0)>
17:36	TEttinger	,(doc alias)
17:36	clojurebot	"([alias namespace-sym]); Add an alias in the current namespace to another namespace. Arguments are two symbols: the alias to be used, and the symbolic name of the target namespace. Use :as in the ns macro in preference to calling this directly."
17:36	TEttinger	,(do (def +1 inc) (+1 yesql))
17:36	clojurebot	#<CompilerException java.lang.RuntimeException: First argument to def must be a Symbol, compiling:(NO_SOURCE_PATH:0:0)>
17:36	TEttinger	,+1
17:36	clojurebot	1
17:36	TEttinger	oh!
17:37	TEttinger	+1 is a valid numeric literal, like -1
17:37	gfredericks	,+1+
17:37	clojurebot	#<NumberFormatException java.lang.NumberFormatException: Invalid number: +1+>
17:37	TEttinger	,++1
17:37	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: ++1 in this context, compiling:(NO_SOURCE_PATH:0:0)>
17:37	TEttinger	,(do (def ++1 inc) (++1 yesql))
17:37	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: yesql in this context, compiling:(NO_SOURCE_PATH:0:0)>
17:37	TEttinger	,(def yesql 1)
17:37	clojurebot	#'sandbox/yesql
17:37	TEttinger	,(do (def ++1 inc) (++1 yesql))
17:37	clojurebot	2
17:38	bja	guess I'd have to define ++
17:38	bja	,(do (def ++ inc) (++ yesql))
17:38	clojurebot	2
17:39	bja	sadly, ++ is ++ is the same effort to write as inc
17:42	dah	justin_smith: whoops, old mutation habits die hard
17:42	dah	(inc honeysql)
17:42	lazybot	⇒ 2
17:43	TEttinger	,(def =D inc)
17:43	clojurebot	#'sandbox/=D
17:43	TEttinger	,(=D 9000)
17:43	clojurebot	9001
17:45	justin_smith	dah: the silly thing is that inc shouldn't even mutate, but whatever, it's just a bot trigger not real clojure
17:46	justin_smith	now, on the other hand, if we had (send honesql inc)
17:46	justin_smith	much more reasonable
17:46	justin_smith	or even swap!
17:46	AeroNotix	yeah swap makes more sense
17:46	AeroNotix	(swap! justin_smith inc)
17:46	AeroNotix	we are all just atoms
17:47	AeroNotix	seems deep as well
17:47	AeroNotix	esp. after 3 glasses of Zinf
17:49	AeroNotix	http://25.media.tumblr.com/tumblr_m8inbwUJFB1rounybo1_500.png I feel like this kid. Except not chicken nuggets, but Clojure.
18:18	dah	or maybe (inc!) heh
18:20	TimMc	,(condp :>> :>> :>> :>>)
18:20	clojurebot	:>>
18:20	TimMc	I hate that macro.
18:21	TimMc	,(condp :>> :>> :>>)
18:21	clojurebot	:>>
18:23	TimMc	,(eval (#'condp = :>> :>> :>> = #'condp))
18:23	clojurebot	#<ExceptionInInitializerError java.lang.ExceptionInInitializerError>
18:23	TimMc	oh shush
18:24	hadronzoo	In clojure.java.jdbc, create-table has been depreciated. Should one use create-table-ddl to create a ddl string and then execute that string?
18:37	amalloy	$dict Apophenia
18:37	lazybot	amalloy: Word not found.
18:38	justin_smith	$google define:apophenia
18:38	lazybot	[Apophenia - Wikipedia, the free encyclopedia] http://en.wikipedia.org/wiki/Apophenia
19:10	numberten	are there (r)subseq functions that work with arbitrary comparison functions? as opposed to just numeric ones?
19:10	numberten	it seems like they should be more general than that
19:12	amalloy	numberten: they all actually work with whatever comparator you gave to the sorted map/set
19:12	amalloy	&(subseq (sorted-map :a 1 :c 2) > :b)
19:12	lazybot	⇒ ([:c 2])
19:12	clojurebot	Cool story bro.
19:14	numberten	interesting
19:15	numberten	i have a program where (comp reverse rsubseq) does not equal (subseq) when given the same arguments
19:16	numberten	i assumed it was my comparison function, but maybe not
19:52	dcunit3d	hey whats up everyone?
20:01	amalloy	(let [{x :x, {x :x} :m} {:x 1 :m {:x 2}}] x). any bets on what will happen?
20:06	AeroNotix	hm
20:06	TimMc	Seen this, it binds in arbitrary order I think?
20:06	AeroNotix	I would like to say the compiler just says "LOLNiceTryException"
20:06	TimMc	based on hashes of keys
20:07	AeroNotix	,(let [{x :x, {x :x} :m} {:x 1 :m {:x 2}}] x)
20:07	clojurebot	2
20:07	AeroNotix	,(macroexpand '(let [{x :x, {x :x} :m} {:x 1 :m {:x 2}}] x))
20:07	clojurebot	(let* [map__53 {:x 1, :m {:x 2}} map__53 (if (clojure.core/seq? map__53) (clojure.lang.PersistentHashMap/create (clojure.core/seq map__53)) map__53) x ...] x)
20:07	AeroNotix	yeah well
20:09	TimMc	Is it strictly reverse order, or hash-based?
20:16	amalloy	TimMc: it's the array map, there shouldn't be any hashes. but of course that's not guaranteed
20:18	xPhilo	I see. . . I think.
20:19	xPhilo	(let [{x :x, {y :x} :m} {:x 1 :m {:x 2}}] [x y])
20:40	numberten	is there a concat-esque function for sorted collections (sets)?
20:40	numberten	i guess that would be union (assuming you maintain the sortedness)
20:40	amalloy	into
20:40	numberten	,(let [s1 (sorted-set "foo") s2 (sorted-set "bar" "foo")] (type (clojure.set/union s1 s2)))
20:40	clojurebot	#<CompilerException java.lang.ClassNotFoundException: clojure.set, compiling:(NO_SOURCE_PATH:0:0)>
20:42	numberten	very nice
21:14	justin_smith	,(require '[clojure.set :as set])
21:14	clojurebot	nil
21:14	justin_smith	it's not automatic
21:14	justin_smith	,(let [s1 (sorted-set "foo") s2 (sorted-set "bar" "foo")] (type (set/union s1 s2)))
21:14	clojurebot	clojure.lang.PersistentTreeSet
21:15	justin_smith	,(type (sorted-set "foo" "bar"))
21:15	clojurebot	clojure.lang.PersistentTreeSet
21:15	justin_smith	set/union should just be conj
21:17	justin_smith	ahh, of course, there are some optimizations
21:17	justin_smith	bubble-max-key
22:27	justin_smith	hey guys, http2.0 support should be out in browsers in a few weeks - how long before we can support it from a ring server I wonder?
23:35	TEttinger	I'm having fun
23:35	TEttinger	,(let [mystery (identity Double/NaN), mystery (. Double NaN)] [(= mystery, mystery) (= mystery, mystery)])
23:35	clojurebot	[true false]
23:38	justin_smith	TEttinger: https://hossofsauce.files.wordpress.com/2012/04/teacher-scolding1.jpg
23:39	TEttinger	,(let [mystery (identity Double/PI), mystery (. Double PI)] [(= mystery, mystery) (= mystery, mystery)])
23:39	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to find static field: PI in class java.lang.Double, compiling:(NO_SOURCE_PATH:0:0)>
23:40	TEttinger	,(let [mystery (identity Math/PI), mystery (. Math PI)] [(= mystery, mystery) (= mystery, mystery)])
23:40	clojurebot	[true true]
23:46	sm0ke	hello need little help with a macro, or function whatever can do
23:46	TEttinger	hey sm0ke, what's the problem?
23:47	TEttinger	justin_smith, our resident help-and-karma-machine, is available last I checked
23:47	TEttinger	,(let [mystery (identity Double/NaN), mystery2 (. Double NaN), mystery3 Double/NaN] [(= mystery, mystery) (= mystery2, mystery2) (= mystery3, mystery3)])
23:47	clojurebot	[true false false]
23:47	justin_smith	haha
23:47	TEttinger	no BOMs in that one, and it's still wonky
23:47	sm0ke	so i need to pass a string which would be a function e.g. "inc" and a arg e.g. 1, the func/macro should compile string and pass it arg
23:47	sm0ke	hello TEttinger
23:48	TEttinger	I thought class/member was sugar for (. class member), but it ain't
23:49	justin_smith	anyway, should it be like - any function in clojure? or do you want only certain ones to be accepted?
23:49	TEttinger	,(fn [fname & args] (eval (conj (list args) (read-string fname))))
23:49	clojurebot	#<sandbox$eval49$fn__50 sandbox$eval49$fn__50@364895a>
23:49	TEttinger	oops
23:50	TEttinger	,((fn [fname & args] (eval (conj (list args) (read-string fname)))) "inc" 2)
23:50	clojurebot	#<ClassCastException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.IFn>
23:50	justin_smith	TEttinger: it should be 2 "inc"
23:50	TEttinger	I thought conj on lists prepended
23:50	justin_smith	it does
23:50	justin_smith	but the inc got prepended first
23:50	justin_smith	then the 2
23:50	justin_smith	,(conj () 1 2)
23:51	clojurebot	(2 1)
23:51	sm0ke	sorry got disconnected
23:51	sm0ke	this is what i have comeup with till now https://www.refheap.com/97515
23:51	justin_smith	TEttinger: (def reverse (partial apply conj ()))
23:51	TEttinger	,((fn [fname & args] (eval (conj () args (read-string fname) 'apply))) "inc" 2)
23:51	clojurebot	#<ClassCastException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.IFn>
23:51	sm0ke	the problem is it works with contants but not vars
23:52	justin_smith	TEttinger: the inc got conjed on first, so is after the 2
23:52	justin_smith	switch their order
23:52	TEttinger	,((fn [fname & args] (eval (conj () 'apply (read-string fname) args))) "inc" 2)
23:52	clojurebot	#<ClassCastException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.IFn>
23:52	justin_smith	sm0ke: outside of loading source code, you have to explicitly resolve or look up symbols to get their var/binding
23:53	sm0ke	,((eval (read-string "inc")) 1)
23:53	clojurebot	2
23:53	justin_smith	TEttinger: you still didn't reverse the order of the "inc" and the 2
23:53	TEttinger	in the... arguments?
23:53	justin_smith	sm0ke: resolve would have worked too
23:53	TEttinger	I passed fname and args
23:53	sm0ke	,(let [a "inc"] ((eval (read-string a)) 1))
23:53	clojurebot	2
23:53	justin_smith	TEttinger: right, and they get conjed
23:53	sm0ke	yea this should do
23:53	justin_smith	,((resolve (symbol "inc")) 1)
23:53	clojurebot	2
23:53	sm0ke	why do you need all that just eval of read-string should be good?
23:54	justin_smith	sm0ke: don't use eval unless you need all of its features
23:54	justin_smith	it's expensive, and can do pretty much anything
23:54	TEttinger	justin_smith, can you make that take varargs with the string first?
23:54	rhg135	,(if-let [v (resolve "+")) @v)
23:54	clojurebot	#<RuntimeException java.lang.RuntimeException: Unmatched delimiter: )>
23:54	rhg135	,(if-let [v (resolve "+")] @v)
23:54	clojurebot	#<ClassCastException java.lang.ClassCastException: java.lang.String cannot be cast to clojure.lang.Symbol>
23:54	rhg135	meh
23:54	sm0ke	,(let [a "inc"] ((resolve (read-string a)) 1))
23:54	clojurebot	2
23:54	TEttinger	,(if-let [v (resolve '+)] @v)
23:54	justin_smith	rhg135: you need a symbol
23:54	clojurebot	#<core$_PLUS_ clojure.core$_PLUS_@79dea99>
23:54	rhg135	ah
23:54	sm0ke	,(let [a "#(inc %)"] ((resolve (read-string a)) 1))
23:54	clojurebot	#<ClassCastException java.lang.ClassCastException: clojure.lang.Cons cannot be cast to clojure.lang.Symbol>
23:55	sm0ke	,(let [a "#(inc %)"] ((eval (read-string a)) 1))
23:55	clojurebot	2
23:55	rhg135	justgreg, i realized it right after i typed it
23:55	sm0ke	i need eval for this
23:55	justin_smith	sm0ke: you can't resolve a whole form, just symbols
23:55	rhg135	im done typing
23:55	sm0ke	justin_smith: got it,
23:55	sm0ke	thanks justin_smith and TEttinger
23:55	rhg135	apologies for the ping
23:55	sm0ke	i am forgetting basic things nowdays
23:55	TEttinger	(inc justin_smith)
23:55	lazybot	⇒ 189
23:55	justin_smith	,((fn [fname & args] (eval (conj () 'apply (read-string fname) 2 "inc")
23:55	clojurebot	#<RuntimeException java.lang.RuntimeException: EOF while reading>
23:55	sm0ke	(inc [ TEttinger justin_smith ])
23:55	lazybot	⇒ 1
23:56	sm0ke	lol
23:56	justin_smith	,((fn [fname & args] (eval (conj () 'apply (read-string fname) args))) 2 "inc")
23:56	clojurebot	#<ClassCastException java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.String>
23:56	justin_smith	erm
23:56	justin_smith	OK
23:56	sm0ke	what is it with the conj thingy??
23:56	lazybot	sm0ke: Definitely not.
23:57	justin_smith	sm0ke: nothing really
23:57	TEttinger	sm0ke, trying to get it to take more than 1 argument
23:57	justin_smith	,(conj () 1 2 3 4 5)
23:57	clojurebot	(5 4 3 2 1)
23:57	justin_smith	aha
23:57	justin_smith	,((fn [fname & args] (eval (conj () (read-string fname) args 'apply))) "inc" 2)
23:57	sm0ke	,(let [a "#(+ %1 %2)"] (apply (eval (read-string a)) [1 2]))
23:58	clojurebot	3
23:58	clojurebot	#<ClassCastException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.IFn>
23:58	TEttinger	which was which???
23:58	lazybot	TEttinger: How could that be wrong?
23:58	justin_smith	TEttinger: you just had apply on the wrong end :) ^
23:58	justin_smith	,((fn [fname & args] (eval (conj () (read-string fname) args 'apply))) "inc" 2)
23:58	clojurebot	#<ClassCastException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.IFn>
23:58	TEttinger	hahaha
23:58	justin_smith	err....
23:58	sm0ke	just apply args to eval
23:58	justin_smith	,((fn [fname & args] (eval (conj () args (read-string fname) 'apply))) "inc" 2)
23:58	clojurebot	#<ClassCastException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.IFn>
23:59	TEttinger	,((fn [fname & args] (apply eval (read-string fname) args)) "inc" 2)
23:59	clojurebot	#<ArityException clojure.lang.ArityException: Wrong number of args (2) passed to: core/eval>
23:59	justin_smith	,((fn [fname & args] (conj () args (read-string fname) 'apply)) "inc" 2)
23:59	clojurebot	(apply inc (2))